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Last Map Update: Mon, Apr 20, 2026 at 5:14:26 am EDT

A late season cold front will be slowly approaching from the north throughout the day and sweeping through the Florida Keys tonight. Breezes will begin freshening as early as this evening and a Small Craft Advisory will likely be needed this evening, starting with the Southeast Gulf waters. Thereafter, hazardous marine conditions will overspread the remaining Florida Keys coastal waters and continue into Tuesday.
Today...Partly sunny with a slight chance of showers. For the Upper Keys, becoming a chance of showers and thunderstorms in the afternoon. Highs in the lower to mid 80s. NE winds near 10 mph, increasing to 10 to 15 mph in the afternoon.
Today...North to northeast gentle to moderate breezes, becoming northeast to east moderate breezes. Seas: Bay/Gulfside, 1-2 ft; West of the Marquesas Keys, 2-3 ft; Hawk Channel, around 1 ft, building to 1-2 ft; Florida Straits, 1-2 ft, building to 2-3 ft; SE Gulf around 2 ft, building to 3-4 ft. Bay/nearshore waters a light to moderate chop, becoming a moderate chop. Slight chance of showers for nearshore waters around the Lower and Middle Keys. Becoming a chance of showers and thunderstorms for waters around the Upper Keys in the afternoon.
Today...North to northeast gentle to moderate breezes, becoming northeast to east moderate breezes. Seas: Bay/Gulfside, 1-2 ft; West of the Marquesas Keys, 2-3 ft; Hawk Channel, around 1 ft, building to 1-2 ft; Florida Straits, 1-2 ft, building to 2-3 ft; SE Gulf around 2 ft, building to 3-4 ft. Bay/nearshore waters a light to moderate chop, becoming a moderate chop. Slight chance of showers for nearshore waters around the Lower and Middle Keys. Becoming a chance of showers and thunderstorms for waters around the Upper Keys in the afternoon.
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